Re: [PATCH v2] x86/boot: Rename overlapping memcpy() to memmove()

[One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>]

O> For example, this is what I've got currently:
> 
> /* Detect and warn about potential overlaps. */
> void *memcpy(void *dest, const void *src, size_t n)
> {
>         if (dest > src && dest - src < n)
>                 warn("Potentially unsafe overlapping memcpy detected!");
>         return __memcpy(dest, src, n);
> }
> 
> Does that seem okay? If so, I'll send the patch...

Probably useful for debug, but instead of relying on __memcpy
happening to handle overlaps - which isn't portable you could instead
debug all platforms by doing

	if (...) {
		warn(...)
		memmove()
	} else
		__memcpy


Alan